30 May
2015
30 May
'15
9:19 a.m.
On 05/29/2015 08:53 PM, Brent Hilpert wrote:
Yes, I've no idea how many of these ones are still working - although given
that they're intact on PCBs, my guess is that they're the result of
board-swaps and so one or two digits/modules may be out (or there are other
board faults) but the rest are still operational.
In total, not counting ones which physical damage or obviously-failed
segments, I think I have around 20 each of dual and triple-digit ones, plus
a handful of quads, which is enough to do something with while having a
spares stock. Hopefully the pair of PSUs that I rescued are OK, as they've
got handy 6V->180V DC convertor modules on them.
cheers
Jules
I'm almost
certain that they're from old gas pumps - maybe the
displays are just more readable in bright sunlight than LED? (there's
a sticker on one of the PSU boards with a 'shipping date' in 1999)
Funny, I was about to mention that use. I remember them in use on gas
pumps up to somewhere around the late-80s or early-90s. One of my bike
routes takes me on a dike behind an industrial area. Sometime around the
mid-90s I remember there being a yard filled with scrapped pumps, a lot
of them missing the display/keyboard cover, so all the displays mounted
on the big controller boards could be seen. I wanted to rescue some of
them but never got around to pursuing it. I was kind of dissuaded by the
thought they had mostly seen a long and continuous service life and may
now(then) be of questionable reliability.